.reg {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 700px;
    height: 368px;
    background-color: pink;
    transform: translate(-50%,-50%);
  }
  .reg li {
   
    height: 36px;
    line-height: 36px;
    /* border: 1px solid #000; */
    margin-bottom: 20px;
  }
  .reg li label {
    display: inline-block;
    width: 88px;
    text-align: right;
  }
  .reg li input {
    width: 240px;
    height: 36px;
    border: 1px solid #000;
    margin-right: 10px;
  }

  .error {
    color: #f00;
  }
  .success {
    color: #0f0;
  }